Hewlett-Packard (NYSE: HPQ) has agreed to acquire cloud software startup Eucalyptus Systems, a deal expected to close in 4Q. Eucalyptus provides software for companies to integrate into their datacenters so their computers and networks can run more efficiently. The company has raised over $56 million in VC funding from investors including Benchmark Capital, e.ventures, New Enterprise Associates and Institutional Venture Partners. With its most recent funding in 2012, Eucalyptus received a valuation of over $156 million. The acquisition will allow HP to compete with other private cloud providers such as Amazon.